Carbureter.



F. G. FOLBERTH.

CARBURETER.

APPLlcAxoN FILED AuG.4. 1911.

1,138,204. Patented May 4, 1915.

2 SHEETS-SHEET l.

F. G. FOLBERTH.

CARBURETER.

APPLICATION FIL-ED Aue.4. 1911.

7mm/mmm www,

.il un STATE-s orrou.

FREDERICK G. FOLBERTH, OF CLEVELAND, OHIO.

i CARBURETER.

T all whom t may concern:

Be it known that I, FREDERICK G. F01.-

BERTH, a citizen of the United States, and

resident of Cleve1and,in the county of Cuyav hoga and State of Ohio, have invented cerreter constructed in accordance with the invention. Fig. 2 is a horizontal section on the line 2,-'2 of Fig. 1, a' portion of the casing being removed. Fig. 3 is asimilar view with one of the operating levers removed. Fig. 4 is a side elevation of the upper portion of the carbureter. Figs. 5v and 6 are detail views of portions of the valve-operating mechanism, the former showing the same inl different positions from that represented in Fig. 1. Fig. 7 is a detail view of a portion of the iioat chamber.

Referring to the drawings, 1 designates themixing chamber of the carburetor which is provided with a mixture outlet 2 controlled by a valve '3. Air is admitted to said chamber through a permanently-open intake 4 and an auxiliary passage 5 controlled by an automatically-actuated valve 6. Hydrocarbon is supplied tosaid chamber 1` from a fuel inlet 7 controlled by a valve 8. The stem of this valve is guided in a suitable way in the casing of the carbureter and is normally held in closed posie@ tion by the action of a coil spring 9.

In the normal operation of the apparatus the opening of the valve 8 Vis effected by a lever 11 that rests upon the upper end of the a5 stem 6 of the automatically-controlled air intake valve 6. Connection between the-levers 10 and 11. is afforded by an adjustable Screw 12 mounted in the lever 10' and extending into contact with the lever 11. The

5o latter 1s fulcrumed upon suitable lugs rising from a plater13 fitted in.agroove or i way in the top of the casing in such manner' that it may be bodily adjusted in order to'vary the e'ective length of such lever. As shown the plate 13 is adapted to be thus actuated by means of a lever 14 to' which is Specication of etters Patent.

is a vertical sectional view through a carbu- -said shaft is connecte manually actuated, The lever 10 is provided at its free end witha'projecting lip 'or tongue 10 which extends into a notch 8- formed in the stem' of the fuel valve 8,

whereby when said lever is rocked about its fulcrum the .valve will be 'positively-lifted, the extent of opening'of the lfuel inlet 7 depending upon the adjustment of the lever 11 and connecting screw 12. A V

Spring-pressed plungers 102 depending Patented May4,1915. Applicationalea August-1,1911. seoras-12,309. V

'connected a-rod -or link- 15 adapted to be from the lever 10 bear upon the plate 13 and act to hold it in its-seat. It will be seen that by manipulation of such 'screw and ad- Justment of the lever 14 .the extent of openmg of the fuel inlet may be varied as-.die-

sired.

Means are also provided whereby the le;-

vers 11, 1.0 may be actuated to open the fuelinlet, while the automatically-controlled ailr intake valve G'remai-ns statlonary.- In the particularl embodiment of the invention illustrated such means comprise a rock shaft 16, mounted in bearings in lugs 16 and to an arm 17 that extends beneaththe free end of lever 11. By

' means of a rod or. link 18 the shaft 16 may b e rocked to adjust the parts fromf the positlonrepresented in Fig. 1 tothose shown in Fig. 5. A spring 20 connecting the vcasing or frame of the apparatus wlth an arm-"19' on the shaft 16,' to whichthe link 18 is attached, acts to retainsaid shaft and the arm 17 thereon in either of the positions shown in Figs. 1 and 5. *l

VA spring 21 actsto normally hold the air intake valve 6 in the position shown in Fig. 1, s aid. spring surrounding the valve stem 6 and bearing ainst the bodyo the casing and a pistonike head 22 attached to the lower end of said valve stem. Said head fits y closely in a chamber 23 formedin the casing bifurcated lever 10 which is actuated by a '28 extending vertically through the float chamber.' A spring 29 acts to normally hold this valve ,in closed position, and the loat v iov l. 30 is adapted to actuaba two vers M crumed in suitable bearings in theplug'28 and engaging the stem of said valve-{whereby the latter will be raised to admit hydrocarbon to the float chamber when the float "therein has fallen to a predetermined extent.

The compression of the spring 29- maybe varied by means of an adjustable` nut 32, Aa

spring33 being arranged between said' nut and the lmemberl 34 in which lit is mounted. This spring, 33, acts as a' `lock to hold the members 32, 34, in the desired relation so that the tension or adjustment of the spring 29 will not be unintentionally changed. A s shownjthe top 35 of the float chamberis made of glass so that inspection of the inte'- y j rior thereof may be had at all times.

vMeans are provided whereby the supply valve 27 of the iloat chamber may be raised from its'seat as desired independent of any the said lever 36'being provided with a suit- -ab'le draft connection, by means of which it may be 'manually rocked as desired. A spring 39y acts to normally retain said lever 36 Iin the position shownin- Fig. 1.

Means are provided whereby any'sedimentv lc'oi'itained in the hydrocarbon supply to the lioat chamber will be prevented from 'assingto the interior thereof and can e readily removed. shown'the plug 28 is providedwith an annular groove 40 which is in alinement with the supply passage 25 'and within which is' arranged a suitable jscreen 41. Said passage 40 communicates with the seat or. passage closed by the valve 27 through passages 42 and also on the opposite side of the screen 41 with a vertical recess or sediment chamber 43 formed in the vlower end of vdsaid plug. Access to this sediment chamber is had through a port controlled by a screw plug 44. The operation and advantages ofthe apparatus hereinbefore A'described will be readily understood,l It will be seen that by adjustment of thexscrew 12' the lip or'projection 10 on the lever 10 may be adjusted in the notch in the valve stem 8 to vary the distance which such lever must be moved before it positively -lengages with the valve stem, and by Tadjustment of the lever 14 the eective length of the-leverll, which'is directly lactuated by 'the' automatically-.con-4v trolled air intake valve, is varied so that the proportional opening of the fuelk inlet with relation to the airsupply can be varied as desired. The severaljlevers and connections between the automatically-controlled; air

valve and the fuel inlet valve may be covered and protected by a cover. 45,*whichis held insegue inplaceliy a resilient arm 46 secured to the casing at one end by a screw 47 about which it may be turned. when-it is desired to remove the cover 45.

. lHaving thus described the invention what is claimed as new is:

1.111" a c'arbureter, the combination with a casing having anair intake and a float chamben of an automatically-controlled air intakevalve, a lever adapted to be actuated by said air valve, a fuel v'valve,ra`nd a 'second independently fulcrumed lever=engaging the fuel valveandfadapted to be actuated by the first said lever.

j. 2. In a carbureteij, the combination with a casing having an air intake and a float chamber, of an automatically-controlled ,air intake valve', a fuel valve, a lever adapted to be actuated by" said air valve and bodily adjustable to vary the distancebetweengits fulcrum and the point of engagement with the air valve, and an independently fulcrumed lever connected with the fuel valve and adapted vto be actuated by the first said lever. j y y 3. In a carbureter, the combination with a casing having an air intake and a lfuel inlet, of an automatically-controlled air intake valve, a fuel valve, two levers, one adapted to be actuated by said air valve to rock the other andthe latter engaging the fuel valve, and means for varying the relation between Vsaid levers, for the purpose described.

4. In a carburetor, the combination with a casing having an air intake and afuel inlet, of an automatically-controlled air intake valve, a fuel valve, a lever adapted to be actuated by said air valve, means for shifting said lever bodily relative to the air valve A Vto vary theeifecti've length of the lever, a 'secondlever adapted to actuate the "fuel valve, and an adjustable connection between said levers. Y

5. In a carbureter, the combination with a casing having anair intake and a fuelinlet, of an automatically-controlled air intake valve, aV fuel valve, a lever adapted-tote actuated b said air valve, means for shi-{itfiing said `ever bodily relative to the valve'to vary j the effective length of the lever, a second lever adapted -to actuate the fuel valve, and a stud or pin adjustably connected with one of said levers and extending intocontact with the other.

6. In a carburetor, the-combination with having an4 air intake and a fuel inlet, o an automatically-controlled air intake. valve, a fuel valve, a leveradapted to open the fuel valve, means for rocking said lever includin a second lever adapted to be actuated by t e air valve, andl means for rocking thelast said lever independent of movement of the air valve.

7. In a carbureter, the combination with a casing having an air intake and af fuel iniso let, of an automatically-controlled air intake valve, a fuel valve, two independently fulcrumed levers, one engaging at its free end with the fuel valve and the other adapted to beactuated by the automatically-controlled air valve, and an adjustable connection between said levers.

8. In a carbureter, the combination with a casing having an air intake and a fuel inlet, of 'an-l automatically-controlled air intake valve, a fuel valve, two independently full crumed levers, one engaging at its free end with the fuel valve and the other adapted to be actuated by the automatically-controlled air valve, a connection between said levers, and means for bodily shifting one of said levers to vary its effective length.

9. In a 'carbureter, the combination with a casing having an air intake and a Hoat chamber, of an automatically-controlled air intake valve, alever adapted to be actuated by said air valve, a ,fuel valve, and a second lever engaging the fuel valve and-extending substantially parallel to and adapted to be actuated by the rst said lever.

10. In a carbureter, the combination with a casing having -an air intake and a float chamber, of an automatically-controlled air intake valve, a lever adapted to be actuated by said air valve, a fuel valve, a second lever` fulcrumed beyond the free end of the first said lever and engaging the fuel valve, and an adjustable contact between the levers.

11. In a carbureter, the; combination with a casing having an air intake and a fuel inlet, of an automatically controlled air inintake valve, a fuel valve, a lever adapted to be actuated by the air valve, means operable by said lever for opening the fuel valve, and means for rocking said lever independent of movement of the air valve.

12. In a carbureter, the combination with a casing having an air intake and a fuel inlet, of an automatically controlled air intake valve, a fuel valve, two superposed levers, one engaging the fuel valve and the other adapted to be actuated by the air intake valve, an adjustable contact between said levers, and means for rocking the levers independent of movement of the air intake valve.

13. In a carbureter, the combination with a casing having an air intake and a fuel inlet, of an automatically controlled air intake valve, a fuel valve, two levers, one adapted to be actuated by said air valve to rock the other and the latter engaging the fuel valve, and means for shifting one of said levers bodily to vary the relative movements of the valves. A

In testimony whereof I aiiix my signature in presence of two witnesses.

FREDERICK G. FOLBERTH. Witnesses:

PHIL LA FRAMBoIs, CLAUDE E. McCoLL. 

